Voice transmitter



J y 12, H. w. ADAMS VOICE TRANSMITTER Filed March 21, 1931 Patented July 12, 1932 PATENT OFFICE HENRY W. ADAMS, OF CINCINNATI, OHIO VOICE rnnivsmrrrnn Application filed March 21, 1931. Serial No. 524,285.

This invention relates to a non-electrical voice-transmitting means, embodied in the present instance, in a toy telephone, though other embodiments thereof, such as in interoifice communicating means, and the like, are obvious.

An object of the invention is to provide a device of the class described for communication over comparatively short distances.

Another object is to provide such means which may be incorporated in a device of conventional appearance and of convenient construction for movement and manipulation by a user, and adapted to be placed on a desk, table or the like.

Another object is to produce such a device having separate and independently movable mouth and ear pieces.

Another object is to provide such means adapted for simple and eflicient construction.

These and other objects are attained by the means described herein and set forth in the accompanying drawing, in which:

Fig. 1 is a side elevational view, partly in cross section, of a toy telephone embodying the means of this invention.

Fig. 2 is a fragmentary cross-sectional view similar to Fig. 1 and showing modified means of the invention.

Fig. 3 is a cross-sectional View taken on line 3-3 of Fig. 2.

The telephone illustrated in Fig. 1 comprises a base 5, stem 6, neck 7, and mouth- 5 piece 8, which together constitute the phone body, two or more of the complete telephones connected by flexible tubing constituting a portable phone system. Stem 6 0 may be threadedly mounted in base 5, as indicated at 9, and is provided throughout its length with the central aperture 10, the neck 7 providing a continuation of this passageway into the mouthpiece 8. i A chamber 11, is formed in base 5, said chamber communicating at its inner end with passageway 10 of the positioned stem 6, and opening at its outer end upon the lateral surface of base 5. This lateral opening, and the entire upper surface of base 5, is provided with a covering 12, of sheet metal or the like.

Chamber 11 constitutes a sound chamber. A flexible tube 13, preferably of' rubber communicates at one end 14 with this chamber, and at the other end, with a longitudinallyapertured receiver 15, normally suspended at the'side of stem 6 upon a hook 16. An extended flexible tube 17 likewise communicates, at one end 18, with chamber 11, and at the other end, with the similar chamber of a second toy telephone, identical in all re- 30 spects, with the'one herewith described.

A bell 19, of the bicycle type, may be positioned at one side of the toy telephone.

The person speaking into mouthpiece 8, transmits voice through passageway 10 and Q5 chamber 11 and tube 17 into the like chamber of the communicating telephone. Here the voice may be readily heard by another person holding the receiver 15 to his ear, such person responding, of course, through the mouthpiece on his'telephone.

A modified-form is illustrated in Figs. 2 and 3. Herein, the upper portion of the -base 20 is provided with the eccentric aperture or chamber 21 opening on the surface of the base and extending into but not through the base. A bore 22 extends from the bottom 23 of aperture 21 through the base 20, said bore being disposed centrally of base 20 for receiving and having suitably secured therein the hollow stem 24. A transverse bore or aperture 25 in stem 24: effects communication between the hollow interior of the stem and the chamber 21. The whole upper. face ofbase20, and chamber 21 are provided with 35 the cover 26, the tubes 17 and 13 being placed in communication with the chamber 21 thus enclosed. A plug 27 closes the bottom of hollow stem 24. This modificationis adapted forgreat simplicity in manufacture.

A device of the kind described'is practicablewhen used with lengths of communi eating tubing 17 up to approximately .50 feet,.there being no need, for exerting the voice above normal. lVithin such circlflfi- 05 stances, the device of this invention provides an efficient and cheaply installed voice transmitting means.

What is claimed is:

1. In a portable voice transmitting and reend with the chamber of a second and similar voice transmitting means.

2. Voice transmitting and receiving means comprising a base member having a closed chamber therein, a hollowed stem attached to the base, communicating with the chamber and having a communicating mouthpiece at the outer end thereof, an independent longitudinally-apertured receiver communicating with said chamber by means of a flexible tube, and an extended tube communicating at one end with said chamber and at the other end with the like chamber of similar voice transmitting means.

3. Voice transmitting and receiving means comprising a base member having a chamber therein opening at one end upon the upper central portion of said base and at the other end upon a lateral portion of the base, a hollow stem having a mouthpiece at its upper end and at its lower end attached centrally of said base in communication with said chamber, a member embracing said stem and covering the base including the lateral opening of said chamber, a hollow receiver member and a pair of tubes attached to said covering and communicating at one end with said chamber at the lateral opening thereof,

; HENRY W. ADAMS one of the tubes communicating at its op- Q posite end with the hollow interior of said receiver member and the second tube com municating at its opposite end with the cham- -ber of similar voice transmitting and receiving means.

4. Voice transmittmg and receiving means comprising a base member having an open chamber in its upper surface and a bore extending from the bottom of said chamber through said base, a hollow stem positioned in said bore and provided adjacent its lower end with an aperture efiecting communication between said chamber and the hollow interior of said stem, a hollow receiver member, a member embracing the stem and covering said base including said chamber, and a pair of tubes, one end of each tube communicating through said chamber with the hollow interior of the stem, the opposite ends of the tubes communicating, one with the hollow interior of said receiver member the 'other with the chamber of similar voice transmitting and receiving means.

5. A portable voice transmitting and receiving means comprising a body havingan enclosed chamber therein, an ear and a mouth appliance, each communicating with said chamber, and a flexible tube communicating at one end with said chamber and at 

